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Priority claimed from GB1489170Aexternal-prioritypatent/GB1303742A/en
Priority claimed from NO01591/70Aexternal-prioritypatent/NO129343B/no
Application filed by GlaverbelfiledCriticalGlaverbel
Priority to NO210973ApriorityCriticalpatent/NO132861C/no
Publication of NO132861BpublicationCriticalpatent/NO132861B/no
Publication of NO132861CpublicationCriticalpatent/NO132861C/no